Display panel and display device

ABSTRACT

Provided are a display panel and a display device. The display panel includes a first display area and a second display area. The first display area at least partially surrounds the second display area, and the second display area is configured to provide a photosensitive element. The first display area and the second display area are each provided with multiple sub-pixels. Each of the multiple sub-pixels includes a pixel circuit and a light emitting element. In each of the first display area and the second display area, active layers of the pixel circuits of the sub-pixels in each column have discontinuity points. The discontinuity point is located between respective two adjacent sub-pixels in the same column, or is located within each sub-pixel.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a continuation of and claims benefit ofpriority to U.S. application Ser. No. 17/235,743 titled “DISPLAY PANELAND DISPLAY DEVICE” and filed on Apr. 20, 2021, which claims priority toChinese Patent Application No. 202011583548.5, filed on Dec. 28, 2020,which is hereby incorporated by reference in its entirety as throughfully and completely set forth herein.

TECHNICAL FIELD

The present disclosure relates to the field of display technologies and,in particular, to a display panel and a display device.

BACKGROUND

With the development of a terminal with the large screen-to-body ratio,the peripheral bezel area of the display screen is getting narrower andnarrower, and for example, a bezel-less display screen has appeared.However, optical components such as a front camera and an infraredsensor still need to be integrated on the display screen, so a spaceneeds to be provided on the upper side of the display screen to placethe optical components, so as to achieve the functions of the opticalcomponents in the display device. However, the area where the opticalcomponents are disposed cannot be used for displaying. Thus, a conceptof “full screen” is put forward. To achieve the full-screen display, acurrent design is to hide the optical components such as the cameraunder the screen. Ambient light can be incident on the opticalcomponents hidden under the screen, so the optical components such asthe camera hidden under the screen can achieve the functions such ascamera shooting, and the area is also provided with pixels so that thisarea can also be used for displaying, thus achieving the full-screendisplay.

SUMMARY

The present disclosure provides a display panel and a display device,which can avoid the problem of screen split in the display panel.

In a first aspect, the present disclosure provides a display panel. Thedisplay panel includes a first display area and a second display area.

The first display area at least partially surrounds the second displayarea, and the second display area is configured to provide aphotosensitive element.

The first display area and the second display area are each providedwith multiple sub-pixels. Each of the multiple sub-pixels includes apixel circuit and a light emitting element.

In each of the first display area and the second display area, activelayers of the pixel circuits of the sub-pixels in each column havediscontinuity points. The discontinuity point is located betweenrespective two adjacent sub-pixels in the same column, or is locatedwithin each sub-pixel.

In a second aspect, the present disclosure further provides a displaydevice including the display panel described in the first aspect.

BRIEF DESCRIPTION OF DRAWINGS

Other features, objects and advantages of the present disclosure willbecome more apparent from a detailed description of non-restrictiveembodiments with reference to the drawings.

FIG. 1 is a graph of transistor IV characteristics of a first displayarea and a second display area in a display panel in the existing art;

FIG. 2 is a structural diagram of a display panel provided by anembodiment of the present disclosure;

FIG. 3 is a schematic diagram of a pixel circuit provided by anembodiment of the present disclosure;

FIG. 4 is a schematic diagram of a discontinuity point setting positionprovided by an embodiment of the present disclosure;

FIG. 5 is a layout diagram of a pixel circuit in a first display area;

FIG. 6 is a layout diagram of a pixel circuit in a second display area;

FIG. 7 is a layout diagram of a pixel circuit in a first display area,as known in the prior art;

FIG. 8 illustrates layer-by-layer layouts of films of a pixel circuitfilm in a first display area;

FIG. 9 illustrates layer-by-layer layouts of films of a pixel circuitfilm in a second display area;

FIG. 10 is a schematic diagram of another discontinuity point settingposition provided by an embodiment of the present disclosure;

FIG. 11 is a layout diagram of a pixel circuit of another first displaypanel provided by an embodiment of the present disclosure;

FIG. 12 is a layout diagram of a pixel circuit of another second displaypanel provided by an embodiment of the present disclosure;

FIG. 13 illustrates layer-by-layer layouts of films of the pixel circuitin FIG. 11 ;

FIG. 14 illustrates layer-by-layer layouts of films of the pixel circuitin FIG. 12 ;

FIG. 15 is a structural diagram of another display panel provided by anembodiment of the present disclosure; and

FIG. 16 is a structural diagram of a display device provided by anembodiment of the present disclosure.

DETAILED DESCRIPTION

The solutions of the present disclosure will be completely describedbelow in conjunction with the specific embodiments and the drawings inthe embodiments of the present disclosure. Apparently, the embodimentsdescribed herein are part, not all, of the embodiments of the presentdisclosure, and based on the embodiments of the present disclosure, allother embodiments obtained by those skilled in the art on the premisethat no creative work is done are within the scope of the presentdisclosure.

The display panel in the existing art includes a first display area anda second display area. Since the second display area is a camera settingarea, sub-pixels in the second display area are sparsely arranged, and aspacing between the sub-pixels is relatively large, so that ambientlight can enter a camera disposed in the second display area through agap between the sub-pixels, thereby achieving the image acquisition. Thesub-pixels of the first display area are closely arranged, and along acolumn direction of the sub-pixels, continuous active layers are usedfor signal transmission in the first display area. Since the spacingbetween the sub-pixels in the second display area is relatively large,the active layers in the second display area are disconnected in thecolumn direction to avoid a relatively large line resistance generatedby the continuous active layers in the column direction. FIG. 1 is agraph of transistor IV characteristics of a first display area and asecond display area in a display panel in the existing art. As shown inFIG. 1 , since the active layers in the second display area aredisconnected in the column direction and the active layers in the firstdisplay area are continuous in the column direction, there is a largedifference in IV characteristic between the transistors of the pixelcircuits of the first display area and the second display area. Sincethe IV characteristics of the transistors of the pixel circuits in thefirst display area and the second display area are different, thesub-pixels in the first display area and the second display area havedifferent luminous values when driven by the same data voltage,resulting in obvious screen split in the first display area and thesecond display area.

In view of the above, an embodiment of the present disclosure provides adisplay panel. FIG. 2 is a structural view of a display panel providedby an embodiment of the present disclosure. As shown in FIG. 2 , thedisplay panel provided by the embodiment of the present disclosureincludes a first display area 10 and a second display area 20. The firstdisplay area 10 at least partially surrounds the second display area 20,and the second display area 20 is configured to provide a photosensitiveelement, such as a camera. Both the first display area 10 and the seconddisplay area 20 can be used for displaying. The first display area 10and the second display area 20 are each provided with multiplesub-pixels. Each sub-pixel includes a pixel circuit and a light emittingelement. In each of the first display area 10 and the second displayarea 20, active layers of the pixel circuits of the sub-pixels in eachcolumn have discontinuity points. The discontinuity point is locatedbetween two adjacent sub-pixels in the same column, or is located withineach sub-pixel.

Since the active layers of the sub-pixels in each column havediscontinuity points in each of the first display area and the seconddisplay area, the differences in pixel circuit transistorcharacteristics of the sub-pixels of the first display area and thesecond display area can be reduced, so that the sub-pixel display effectof the first display area and the second display area tends to beuniform, thereby avoiding the screen split in the first display area andthe second display area.

Optionally, the discontinuity point in the first display area has a sameposition as the discontinuity point in the second display area.According to the embodiment of the present disclosure, the discontinuitypoint in the first display area has the same position as thediscontinuity point in the second display, so that the uneven displayproblem caused by the difference between the design of the active layersin the first display area and the design of the active layers in thesecond display area can be reduced as much as possible. For example, itcan be configured that each of the discontinuity points of the activelayers of the pixel circuits of the sub-pixels in each column in thefirst display area is located between respective two adjacent ones ofthe sub-pixels in the each column, and each of the discontinuity pointsof the active layers of the pixel circuits of the sub-pixels in eachcolumn in the second display area is located between respective twoadjacent ones of the sub-pixels in the each column. Alternatively, eachof the discontinuity points of the active layers of the pixel circuitsof the sub-pixels in each column in the first display area is locatedwithin a respective one of the sub-pixels in the each column, and eachof the discontinuity points of the active layers of the pixel circuitsof the sub-pixels in each column in the second display area is locatedwithin a respective one of the sub-pixels in the each column.

Alternatively, in the display panel provided by the embodiment of thepresent disclosure, the active layer may be a polycrystalline siliconmaterial, a metal oxide material, an amorphous silicon material or thelike. The active layer material is not specifically limited in theembodiment of the present disclosure. For the active layer material witha larger carrier mobility, when the active layers of the first displayarea have no discontinuity point in the column direction of thesub-pixels and the active layers of the second display area havediscontinuity points in the column direction of the sub-pixels, thedifference in transistor characteristics is relatively large. Therefore,when the active layer adopts a material with a larger carrier mobilitysuch as the polycrystalline silicon, the screen split phenomenon of thefirst display area and the second display area has been improvedapparently in the embodiment of the present disclosure.

FIG. 3 is a schematic diagram of a pixel circuit provided by anembodiment of the present disclosure. As shown in FIG. 3 , the pixelcircuit includes, in part, a drive transistor T, a data write module 30,a threshold compensation module 40, a light emission control module 50,a first reset module 60 and a second reset module 70. The data writemodules 30 is configured to provide a data signal for the drivetransistor. The light emission control module 50 is connected in seriesto the drive transistor T and the light-emitting element 80 separately,and the light emission control module 50 is configured to controlwhether a drive current flows through the light emitting element 80. Thethreshold compensation module 40 is used for detecting andself-compensating an offset of a threshold voltage of the drivetransistor T. The first reset module 60 is connected to a control end ofthe drive transistor T and is configured to reset the control end of thedrive transistor T. The second reset module 70 is electrically connectedto the light emitting element 80 and is configured to reset the lightemitting element 80.

Optionally, the data write module 30 includes a first transistor M1. Thethreshold compensation module 40 includes a second transistor M2. Thelight emission control module 50 includes a third transistor M3 and afourth transistor M4. The first reset module 60 includes a fifthtransistor M5, and the second reset module 70 includes a sixthtransistor M6. A first end of the drive transistor T is electricallyconnected to a second end of the first transistor M1. A first end of thefirst transistor M1 is electrically connected to a data line. A firstend of the second transistor M2 is electrically connected to a secondend of the drive transistor T, and a second end of the second transistorM2 is electrically connected to the control end of the drive transistorT. A first end of the fifth transistor M5 is electrically connected to areset signal line Vref, and a second end of the fifth transistor M5 iselectrically connected to the control end of the drive transistor T. Afirst end of the third transistor M3 is electrically connected to afirst positive power supply signal line PVDD1, a second end of the thirdtransistor M3 is electrically connected to the first end of the drivetransistor T, and a control end of the third transistor M3 iselectrically connected to a light emission control signal line Emit i. Afirst end of the fourth transistor M4 is electrically connected to thesecond end of the drive transistor T, and a second end of the fourthtransistor M4 is electrically connected to an anode of the lightemitting element 80. A first end of the sixth transistor M6 iselectrically connected to the reset signal line Vref, and a second endof the sixth transistor M6 is electrically connected to the anode of thelight emitting element 80. As shown in FIG. 3 , the pixel circuitfurther includes a storage capacitor Cst, where a first electrode plateof the storage capacitor Cst is electrically connected to the firstpositive power supply signal line PVDD1, and a second electrode plate ofthe storage capacitor Cst is electrically connected to the control endof the drive transistor T. Exemplarily, a control end of the fifthtransistor M5 is electrically connected to a scanning line Scan i, acontrol end of the second transistor M2 is electrically connected to ascanning line Scan (i+1), a control end of the fourth transistor M4 iselectrically connected to the light emission control signal line Emit i,and a control end of the sixth transistor M6 is electrically connectedto a second scanning line Scan (i+1), where i is a positive integer.

It is to be noted that FIG. 3 exemplarily provides a schematic diagramof optional functional modules of a pixel circuit and a structuraldiagram of optional internal components of the pixel circuit, which isnot limited by the embodiment of the present disclosure. For example,the pixel circuit shown in FIG. 3 includes seven transistors and onecapacitor. In other embodiments, the composition and connection mode ofthe internal components of the pixel circuit may be adjusted accordingto the actual requirements of the display panel, and the functionalmodules and connection relationships in FIG. 3 can be increased,decreased and replaced according to the functional requirements of thepixel circuit.

After the active layers are provided with a discontinuity point, a metalline, a via and the like may be subsequently provided to connect theactive layers at the discontinuity for signal transmission. In thiscase, if the discontinuity point is too close to the drive transistor,subsequent processing for the metal line, the via and the like willaffect the stability of the drive transistor. Therefore, to prevent thediscontinuity point of the active layers from affecting the stability ofthe drive transistor, the discontinuity point is provided to be as faras possible from the drive transistor in the embodiment of the presentdisclosure. For example, the distance between the discontinuity pointand the drive transistor is provided to be greater than 5 um.

According to the layout design of respective components in the pixelcircuit and the requirement of the distance between the discontinuitypoint and the drive transistor, a position of the discontinuity pointmay be selected. For example, referring to FIG. 3 , the discontinuitypoint is disposed between the first reset module 60 (e.g., including thefifth transistor M5) and the threshold compensation module 40 (e.g.,including the second transistor M2), between the threshold compensationmodule 40 (e.g., including the second transistor M2) and the lightemission control module 50 (e.g., including the fourth transistor M4),or between the second reset module 70 (e.g., including the sixthtransistor M6) and the light emission control module 50 (e.g., includingthe fourth transistor M4); or the discontinuity point is disposedbetween the second reset module 70 (e.g., including the sixth transistorM6) of a sub-pixel in an i-th row and the first reset module 60 (e.g.,including the fifth transistor M5) of a sub-pixel in an (i+1)-th row. Inthe following, the pixel circuit is described by using the circuitstructure shown in FIG. 3 as an example.

FIG. 4 is a schematic diagram of a discontinuity point setting positionprovided by an embodiment of the present disclosure. FIG. 4 describes byusing the circuit structure and the connection relationship shown inFIG. 3 as an example. As shown in FIG. 4 , the active layer of eachsub-pixel is provided with a discontinuity point P between the secondreset module 70 and the light emission control module 50. The activelayer of the second reset module 70 is electrically connected to theactive layer of the light emission control module 50 through a firstmetal line (not shown in FIG. 4 ). FIG. 5 is a layout diagram of a pixelcircuit in a first display area. FIG. 6 is a layout diagram of a pixelcircuit in a second display area. FIG. 7 is a layout diagram of a pixelcircuit in a first display area, as known in the prior art. To show thelayout structure of the pixel circuit more clearly, FIG. 8 illustrateslayer-by-layer layouts of films of a pixel circuit in a first displayarea, and FIG. 9 illustrates layer-by-layer layouts of films of a pixelcircuit in a second display area.

It is to be noted that the layout structure of the pixel circuit isdescribed by using the structure of modules of the pixel circuit shownin FIG. 3 as an example.

As shown in FIG. 7 , the active layer is represented by 100. As seenfrom the prior art FIG. 7 , in the first display area, the active layerof the second reset module (the sixth transistor M6) is provided to becontinuous with the active layer of the light emission control module(the fourth transistor M4). The light emitting element (not shown in thefigure) is connected between the continuous active layers of the secondreset module (the sixth transistor M6) and the light emission controlmodule (the fourth transistor M4), thereby achieving signal transmissionbetween the light emission control module and the light emitting elementand signal transmission between the second reset module and the lightemitting element. Referring to FIGS. 5, 6, 8, and 9 concurrently, theactive layer 100 of each sub-pixel in the first display area and thesecond display area is disconnected between the second reset module (thesixth transistor M6) and the light emission control module (the fourthtransistor M4) to form a discontinuity point.

As shown in FIGS. 5 and 6 , in the embodiment of the present disclosure,the discontinuity point is disposed in the active layer between thesecond reset module (the sixth transistor M6) and the light emissioncontrol module (the fourth transistor M4) each sub-pixel, and toimplement the normal signal transmission, the active layer of the secondreset module and the active layer of the light emission control moduleare electrically connected at the discontinuity point through the firstmetal line 91. In other words, first metal line 91 provides electricalconnection between the active layer of the second reset module and theactive layer of the light emission control module.

Optionally, the display panel includes a substrate and a reset signalline layer. The reset signal line layer is located on a side of theactive layer facing away from the substrate. The reset signal line layerincludes multiple reset signal lines. The second reset module of each ofsub-pixels in an i-th row and the first reset module of a respective oneof sub-pixels in an (i+1)-th row are electrically connected to a samereset signal line, where i is a positive integer. As shown in FIGS. 5and 6 , the second reset module (the sixth transistor M6) of thesub-pixel in the i-th row and the first reset module (the fifthtransistor M5) of the sub-pixel in the (i+1)-th row are electricallyconnected to the same reset signal line. If the second reset moduleincludes the sixth transistor M6 and the first reset module includes thefifth transistor M5, then the sixth transistor M6 of the sub-pixel inthe i-th row and the fifth transistor M5 of the sub-pixel in the(i+1)-th row are electrically connected to the same reset signal lineVref (i+1). The reset signal line Vref (i+1) supplies a reset signal tothe sixth transistor M6 of the sub-pixel in the i-th row and the fifthtransistor M5 of the sub-pixel in the (i+1)-th row. Since a reset signalprovided by the first reset module (the fifth transistor M5) for acontrol end of the drive transistor T is the same as a reset signalprovided by the second reset module (the sixth transistor M6) for ananode of the light emitting element, the sixth transistor M60 of thesub-pixel in the i-th row and the fifth transistor M5 of the sub-pixelin the (i+1)-th row may be provided to be electrically connected to thesame reset signal line Vref (i+1), thereby reducing the number of resetsignal lines in the display panel.

Optionally, referring to FIGS. 8 and 9 , the display panel includes afirst metal layer A1 for forming a scan line Scan and a light emissioncontrol signal line Emit of the display panel.

Optionally, referring to FIGS. 8 and 9 , the display panel furtherincludes a second metal layer A2. The second metal layer A2 is locatedon a side of the reset signal line layer AC facing away from thesubstrate. An insulating layer is disposed between the reset signal linelayer AC and the second metal layer A2 to achieve electrical insulation.The second metal layer AC includes multiple data lines Data and thefirst metal line 91. As shown in FIGS. 5, 6, 8, and 9 , the data linesData and the first metal line 91 are located on the same layer andformed by using the second metal layer A2. The embodiment of the presentdisclosure uses the second metal layer A2 to prepare and form the dataline Data and the first metal line 91 simultaneously, and the activelayer of the second reset module is electrically connected to the activelayer of the light emission control module at the discontinuity pointthrough the first metal line 91, without providing an additional metalfilm for the first metal line 91, so that the number of processes can bereduced.

Optionally, the display panel includes a second metal layer and a thirdmetal layer. The second metal layer is located on a side of the resetsignal line layer facing away from the substrate. The third metal layeris located on a side of the second metal layer facing away from thesubstrate. An insulating layer is disposed between the second metallayer and the third metal layer to achieve the electrical insulation.The second metal layer includes multiple data lines Data and multiplefirst positive power supply signal lines PVDD1. The third metal layerincludes multiple second positive power supply signal lines and thefirst metal line. The multiple second positive power supply signal linesare electrically connected to the multiple first positive power supplysignal lines. That is, in a direction facing away from the substrate,the display panel is sequentially provided with the active layer, thefirst metal layer, the second metal layer, the insulating layer, and thethird metal layer. Multiple second positive power signal lines and thefirst metal line are formed by using the third metal layer. The secondmetal layer includes multiple data lines and multiple first positivepower supply signal lines. The first positive power supply signal lineis used for providing a positive power supply signal for the pixelcircuit, and the data line Data is used for providing a data signal forthe pixel circuit. The third metal layer includes multiple secondpositive power signal lines and the first metal line. Since it isnecessary to supply a positive power supply signal to the pixel circuitof each sub-pixel in the display panel, but the first positive powersignal line has a line resistance, it is possible that there is adifference among positive power supply signals received by thesub-pixels at different positions, thereby affecting the display effect.Therefore, in the display panel in the embodiment of the presentdisclosure, a second positive power supply signal line is formed throughthe third metal layer, is electrically connected to the first positivepower supply signal line, and is also used for supplying a positivepower supply signal to the pixel circuit. The second positive powersupply signal lines and the first positive power supply signals areequivalently connected in parallel so that when the positive powersupply signal is supplied to the pixel circuit, the line resistance canbe reduced to a certain extent. In the embodiment of the presentdisclosure, the second power supply signal lines and the first metalline are formed through the third metal layer in a same process, withoutconfiguring an additional metal film for the first metal line, so thatthe number of processes can also be reduced.

Optionally, in a same column, active layers of the sub-pixel in the i-throw and the sub-pixel in the (i+1)-th row are provided with adiscontinuity point at a junction of the second reset module of thesub-pixel in the i-th row and the first reset module of the sub-pixel inthe (i+1)-th row, where i is a positive integer. FIG. 10 is a schematicdiagram of another discontinuity point setting position provided by anembodiment of the present disclosure. FIG. 10 illustrates by using thecircuit structure and the connection relationship shown in FIG. 3 as anexample. As shown in FIG. 10 , in the same column, active layers of thesub-pixel in an i-th row and the sub-pixel in an (i+1)-th row areprovided with a discontinuity point P between the second reset module 70of the sub-pixel in the i-th row and the first reset module 60 of thesub-pixel in the (i+1)-th row.

Optionally, the display panel includes a substrate and a reset signalline layer. The reset signal line layer is located on a side of theactive layer facing away from the substrate. The reset signal line layerincludes multiple reset signal lines. The active layer of the sub-pixelin the i-th row is electrically connected to one reset signal line atthe discontinuity point through a second metal line. The active layer ofthe sub-pixel in the (i+1)-th row is electrically connected to one resetsignal line at the discontinuity point through a third metal line. FIG.11 is a layout diagram of a pixel circuit of another first display panelprovided by an embodiment of the present disclosure. FIG. 12 is a layoutdiagram of a pixel circuit of another second display panel provided byan embodiment of the present disclosure. To show the layout structure ofthe pixel circuit more clearly, FIG. 13 illustrates layer-by-layerlayouts of films of the pixel circuit in FIG. 11 , and FIG. 14illustrates layer-by-layer layouts of films of the pixel circuit in FIG.12 .

In FIGS. 11 and 12 , in the same column, the active layers of thesub-pixel in the i-th row and the sub-pixel in the (i+1)-th row areprovided with a discontinuity point between the second reset module (thesixth transistor M6) of the sub-pixel in the i-th row and the firstreset module (the fifth transistor M5) of the sub-pixel in the (i+1)-throw, that is, the discontinuity point P between the first display areaand the second display area are located between the second reset moduleof the sub-pixel in the i-th row and the first reset module of thesub-pixel in the (i+1)-th row.

Referring to FIGS. 11, 12, 13 and 14 concurrently, the reset signal linelayer AC includes multiple reset signal lines Vref. The active layer ofthe sub-pixel in the i-th row is electrically connected to one resetsignal line Vref at the discontinuity point P through a second metalline 92. The active layer of the sub-pixel in the (i+1)-th row iselectrically connected to one reset signal line Vref at thediscontinuity point P through a third metal line 93. Referring to FIG. 7, in the existing art, in the first display area, the active layer ofthe second reset module (the sixth transistor M6) of the sub-pixel inthe i-th row is provided to be continuous with the active layer of thefirst reset module (the fifth transistor M5) of the sub-pixel in the(i+1)-th row, and one reset signal line is electrically connectedbetween the active layer of the second reset module (the sixthtransistor M6) of the sub-pixel in the i-th row and the active layer ofthe first reset module (the fifth transistor M5) of the sub-pixel in the(i+1)-th row to acquire a reset signal. In the embodiment of the presentdisclosure, in the same column, the active layers of the sub-pixel inthe i-th row and the sub-pixel in the (i+1)-th row are provided with adiscontinuity point between the second reset module (the sixthtransistor M6) of the sub-pixel in the i-th row and the first resetmodule (the fifth transistor M5) of the sub-pixel in the (i+1)-th row,and thus the reset signal line needs to be electrically connected to theactive layer of the second reset module (the sixth transistor M6) of thesub-pixel in the i-th row and the active layer of the first reset module(the fifth transistor M5) of the sub-pixel in the (i+1)-th rowseparately at the discontinuity point. As shown in FIGS. 11, 12, 13 and14 , the active layer of the second reset module (the sixth transistorM6) of the sub-pixel in the i-th row needs to be electrically connectedto the reset signal line at the discontinuity point through the secondmetal line 92, and the active layer of the first reset module (the fifthtransistor M5) of the sub-pixel in the (i+1)-th row needs to beelectrically connected to the reset signal line at the discontinuitypoint through the third metal line 93.

Optionally, a first scanning line, a second scanning line, and a thirdscanning line are provided for sub-pixels in each row in the firstdisplay area and the second display area. A control end of the firstreset module is electrically connected to the first scanning line. Acontrol end of the data write module and a control end of the thresholdcompensation module are electrically connected to the second scanningline. A control end of the second reset module is electrically connectedto the third scanning line. Comparing FIG. 7 with FIG. 11 and FIG. 6with FIG. 12 , if the discontinuity point is disposed between the secondreset module of the sub-pixel in the i-th row and the first reset moduleof the sub-pixel in the (i+1)-th row in the same column, the sub-pixelin each row in the first display area and the second display area can becontrolled by three scanning lines. For example, as shown in FIG. 11 ,the control end of the first reset module (the fifth transistor M5) ofthe sub-pixel in the i-th row is electrically connected to the firstscanning line Scan i. The first reset module (the fifth transistor M5)is controlled by a scanning signal provided by the first scanning lineScan i to reset the control end of the drive transistor T. The controlend of the data write module (the first transistor M1) and the controlend of the threshold compensation module (the second transistor M2) areelectrically connected to the second scanning line Scan (i+1). The datawrite module (the first transistor M1) and the threshold compensationmodule (the second transistor M2) are controlled by a scanning signalprovided by the second scanning line Scan (i+1) to write data to thedrive transistor T. The control end of the second reset module (thesixth transistor M6) is electrically connected to the third scanningline Scan (i+1). The second reset module (the sixth transistor M6) iscontrolled by a scanning signal provided by the third scanning line Scan(i+1) to reset the light emitting element. Referring to FIG. 11 and FIG.12 , the second reset module (the sixth transistor M6) of the sub-pixelin the i-th row may not need to share one scanning line with the firstreset module (the fifth transistor M5) of the sub-pixel in the (i+1)-throw, and the sub-pixels in the two rows may be controlled independently.

Optionally, a scanning pulse signal received by the third scanning lineis same as a scanning pulse signal received by the first scanning lineor the second scanning line. That is, in the same row, a reset phase ofthe second reset module of the sub-pixel may be performed simultaneouslywith a reset phase of the first reset module of the sub-pixel, or in thesame row, the reset phase of the second reset module of the sub-pixelmay be performed simultaneously with a data write phase of the datawrite module and a compensation phase of the threshold compensationmodule of the sub-pixel, as long as the light emitting element is resetby the second reset module before the light emitting phase of thesub-pixel. In FIGS. 11 and 12 , exemplarily, the scanning pulse signalreceived by the third scanning line and the scanning pulse signalreceived by the second scanning line are provided to be same, and thusboth the second scanning line and the third scanning line arerepresented by Scan (i+1).

Optionally, in the first display area, the second reset module of thesub-pixel in the i-th row and the first reset module of the sub-pixel inthe (i+1)-th row are electrically connected to the same reset signalline at the discontinuity point. Since the sub-pixels in the firstdisplay area are closely arranged, for example, as shown in FIG. 11 ,the second reset module (the sixth transistor M6) of the sub-pixel inthe i-th and the first reset module (the fifth transistor M5) of thesub-pixel in the (i+1)-th row are provided to be electrically connectedto the same reset signal lines at the discontinuity point. Suchconfiguration can reduce the number of signal lines in the displaypanel.

Optionally, in the second display area, a first reset signal line and asecond reset signal line are provided for the sub-pixel in each row; aninput end of the first reset module is electrically connected to thefirst reset signal line; and an input end of the second reset module iselectrically connected to the second reset signal line. For example,referring to FIG. 12 , the sub-pixel in each row is correspondinglyprovided with two reset signal lines, and the sub-pixel in the i-th rowis provided with a first reset signal line Vref i and a second resetsignal line Vref (i+1) in the i-th row. The input end of the first resetmodule (the fifth transistor M5) of the sub-pixel in the i-th row iselectrically connected to the first reset signal line Vref i. The inputend of the second reset module (the sixth transistor M6) of thesub-pixel in the i-th row is electrically connected to the second resetsignal line Vref (i+1). Since the second display area needs to beprovided with a photosensitive element, comparing with the sub-pixels inthe first display area, the sub-pixels in the second display area aresparsely arranged to enable more ambient light to be transmitted to thephotosensitive element (such as a camera) in the second display area. Ifthe sub-pixels in two adjacent rows still share the same reset signalline, since a distance between the sub-pixels in the two adjacent rowsis relatively large, a longer connection line needs to be provided toenable the same reset signal line to provide the reset signal for thesub-pixels in the two adjacent rows. However, the longer connection linemay increase the line resistance, and occupy a light-transmissive areabetween the sub-pixels in the two adjacent rows, which reduces theexternal ambient light transmitted to the photosensitive element andthus affects the working effect of the photosensitive element. Accordingto the embodiment of the present disclosure, in the second display area,the sub-pixel in each row is provided with both the first reset signalline and the second reset signal line, where the first reset module ofthe sub-pixel in each row acquires the reset signal through the firstreset signal line, and the second reset module of the sub-pixel in eachrow acquires the reset signal through the second reset signal line,thereby avoiding affecting the working effect of the photosensitiveelement in the second display area due to that the sub-pixels in the twoadjacent rows share the reset signal line.

Optionally, the display panel further includes a second metal layer. Thesecond metal layer is located on a side of the reset signal line layerfacing away from the substrate. An insulating layer is disposed betweenthe reset signal line layer and the second metal layer. The second metallayer includes multiple data lines, a second metal line, and a thirdmetal line. Referring to FIGS. 13 and 14 , the display panel includes afirst metal layer A1 for forming a scan line Scan and a light emissioncontrol signal line Emit of the display panel. Optionally, the displaypanel further includes a second metal layer A2. The second metal layerA2 is located on a side of the reset signal line layer AC facing awayfrom the substrate. An insulating layer is disposed between the resetsignal line layer AC and the second metal layer A2 to achieve electricalinsulation. The second metal layer A2 includes multiple data lines Data,the second metal line 92, and the third metal line 93. In the embodimentof the present disclosure, the second metal layer A2 is used to preparethe data line Data, the second metal line 92, and the third metal line93 simultaneously. The active layer of the second reset module (thesixth transistor M6) of the sub-pixel in the i-th row is electricallyconnected to the reset signal line Vref at the discontinuity pointthrough the second metal line 92, and the active layer of the firstreset module (the fifth transistor M5) of the sub-pixel in the (i+1)-throw is electrically connected to the reset signal line Vref at thediscontinuity point through the third metal line 93. There is no need toprovide an additional metal film for the second metal line 92 and thethird metal line 93, so that the number of the processes can be reduced.

Optionally, the display panel further includes a second metal layer anda third metal layer. The second metal layer is located on a side of thereset signal line layer facing away from the substrate. The third metallayer is located on a side of the second metal layer facing away fromthe substrate. An insulating layer is disposed between the second metallayer and the third metal layer. The second metal layer includesmultiple data lines and multiple first positive power supply signallines. The third metal layer includes multiple second positive powersupply signal lines, the second metal line and the third metal line. Themultiple second positive power supply signal lines are electricallyconnected to the multiple first positive power supply signal lines.

The second metal layer includes multiple data lines and multiple firstpositive power supply signal lines. The third metal layer includesmultiple second positive power supply signal lines, the second metalline and the third metal line. The multiple second positive power supplysignal lines are electrically connected to the multiple first positivepower supply signal lines. That is, in a direction facing away from thesubstrate, the display panel is sequentially provided with the activelayer, the first metal layer, the second metal layer, the insulatinglayer and the third metal layer.

The first positive power supply signal line is used for providing apositive power supply signal for the pixel circuit, and the data line isused for providing a data signal for the pixel circuit. The third metallayer includes multiple second positive power signal lines, the secondmetal line and the third metal line. Since it is necessary to supply apositive power supply signal to the pixel circuit of each sub-pixel inthe display panel, but the first positive power signal line has a lineresistance, it is possible that there is a difference among positivepower supply signals received by the sub-pixels at different positions,thereby affecting the display effect. Therefore, in the display panel inthe embodiment of the present disclosure, the second positive powersupply signal lines are formed through the third metal layer, and arealso used for supplying positive power supply signals to the pixelcircuit. The second positive power supply signal lines and the firstpositive power supply signals are equivalently connected in parallel sothat when the positive power supply signal is supplied to the pixelcircuit, the line resistance can be reduced to a certain extent. In theembodiment of the present disclosure, the second positive power supplysignal lines, the second metal line and the third metal line are formedthrough the third metal layer in a same process, without configuring anadditional metal film for the second metal line and the third metalline, so that the number of processes can also be reduced.

Optionally, based on the above embodiments, the first display area ofthe display panel provided by the embodiment of the present disclosuremay include a first area and a second area, and the second area islocated between the first area and the second display area. A sub-pixelarrangement density in the first area is greater than a sub-pixelarrangement density in the second area; and the sub-pixel arrangementdensity in the second area is greater than a sub-pixel arrangementdensity in the second display area. FIG. 15 is a structural view ofanother display panel provided by an embodiment of the presentdisclosure. As shown in FIG. 15 , a first display area 10 of the displaypanel provided by the embodiment of the present disclosure includes afirst area 11 and a second area 12. The second area 12 is locatedbetween the first area 11 and the second display area 20. A sub-pixelarrangement density in the first area 11 is greater than a sub-pixelarrangement density in the second area 12; and the sub-pixel arrangementdensity in the second area 12 is greater than a sub-pixel arrangementdensity in the second display area 20. Since the second display area 20needs to be provided with a photosensitive element, the sub-pixelarrangement density in the second display area 20 is smaller than thesub-pixel arrangement density in the first display area 10 so that asmuch ambient light as possible is transmitted to the photosensitiveelement. To avoid a significant difference in display brightness or thelike caused by the difference in the sub-pixel arrangement density inthe first display area 10 and the second display area 20, in theembodiment of the present disclosure, the first display area 10 isdivided into the first area 11 and the second area 12, and the sub-pixelarrangement density in the second area 12 is provided to be less thanthe sub-pixel arrangement density in the first area 11, and thesub-pixel arrangement density in the second area 12 is provided to belarger than the sub-pixel arrangement density in the second display area20. That is, the second area 12 is equivalent to a transition areabetween the first area 11 and the second display area 20. The sub-pixelarrangement density in the second area 12 is between the sub-pixelarrangement density in the first area 11 and the sub-pixel arrangementdensity in the second display area 20, so that it is possible to avoidundesirable display effects such as a large display brightnessdifference caused by a large difference between the sub-pixelarrangement densities in the first display area and the second displayarea.

Based on the same concept described above, the embodiments of thepresent disclosure further provide a display device. The display deviceincludes the display panel described in any embodiment of the presentdisclosure. Therefore, the display device provided by this embodiment ofthe present disclosure has the corresponding beneficial effects of thedisplay panel provided by the embodiments of the present disclosure,which is not repeated here. Exemplarily, the display device may be amobile phone, a computer, a smart wearable device (for example, a smartwatch), an onboard display device, and other electronic devices, whichis not limited by the embodiments of the present disclosure.

Exemplarily, FIG. 16 is a structural view of a display device providedby an embodiment of the present disclosure. As shown in FIG. 16 , thedisplay device includes the display panel 101 in the embodimentsdescribed above.

It is to be noted that the preceding are merely preferred embodiments ofthe present disclosure and the technical principles used therein. It isto be understood by those skilled in the art that the present disclosureis not limited to the embodiments described herein. Those skilled in theart can make various apparent modifications, adaptations, andsubstitutions without departing from the scope of the presentdisclosure. Therefore, while the present disclosure has been describedin detail via the preceding embodiments, the present disclosure is notlimited to the preceding embodiments and may include equivalentembodiments without departing from the concept of the presentdisclosure. The scope of the present disclosure is determined by thescope of the appended claims.

What is claimed is:
 1. A display panel, comprising: a first display areaand a second display area, wherein the first display area at leastpartially surrounds the second display area, and the second display areacomprises a photosensitive element, wherein each of the first displayarea and the second display area comprises a plurality of sub-pixelseach comprising a pixel circuit and a light emitting element; whereinthe pixel circuit further comprises a drive transistor, a data writemodule, a threshold compensation module, a light emission controlmodule, and a first reset module; wherein the data write module isconfigured to provide a data signal to the drive transistor; and thelight emission control module is connected in series to the drivetransistor and the light emitting element separately and is configuredto control whether a drive current flows through the light emittingelement; wherein the threshold compensation mode is configured to detectand self-compensate an offset of a threshold voltage of the drivetransistor; wherein the first reset module is connected to a control endof the drive transistor and is configured to reset the control end ofthe drive transistor; wherein in the first display area and the seconddisplay area, active layers of pixel circuits in each column havediscontinuity points; and at least one of: wherein in the first displayarea, a discontinuity point of one of the active layers is arrangedbetween the threshold compensation module and the light emission controlmodule; or wherein in the second display area, a discontinuity point ofone of the active layers is arranged between the threshold compensationmodule and the light emission control module.
 2. The display panel ofclaim 1, further comprising at least one of: wherein in the firstdisplay area, in response to the discontinuity point of one of theactive layers is arranged between the threshold compensation module andthe light emission control module, the threshold compensation module iselectrically connected to the light emission control module through ametal line; or in the second display area, in response to thediscontinuity point of one of the active layers is arranged between thethreshold compensation module and the light emission control module, thethreshold compensation module is electrically connected to the lightemission control module through a first metal line.
 3. The display panelof claim 1, further comprising: a substrate, a positive power supplysignal line, and a data line; wherein in the second display area, afirst end of an active layer of each pixel circuit is electricallyconnected to the positive power supply signal line; and wherein in thesecond display area, a second end of the active layer of each pixelcircuit has an orthographic projection on a surface of the substrate,the data line has an orthographic projection of on the surface of thesubstrate, and the orthographic projection of the second end overlapswith the orthographic projection of the data line.
 4. The display panelof claim 1, wherein positions of the discontinuity points in the firstdisplay area are same as positions of the discontinuity points in thesecond display area.
 5. The display panel of claim 1, wherein each ofthe active layers is made of a polysilicon material.
 6. The displaypanel of claim 1, wherein the pixel circuit further comprises a secondreset module; and wherein the second reset module is electricallyconnected to the light emitting element and is configured to reset thelight emitting element.
 7. The display panel of claim 6, wherein adistance between each of the discontinuity points and a respective drivetransistor is greater than 5 um.
 8. The display panel of claim 6,wherein an active layer of each of the plurality of sub-pixels comprisesa discontinuity point between the associated second reset module and theassociated light emission control module; and wherein an active layer ofthe second reset module is electrically connected to an active layer ofthe light emission control module through a first metal line.
 9. Thedisplay panel of claim 8, further comprising a substrate and a resetsignal line layer, wherein the reset signal line layer is located on aside of the active layer facing away from the substrate; wherein thereset signal line layer comprises a plurality of reset signal lines; andwherein a second reset module of each of the plurality of sub-pixels inan i-th row and a first reset module of an associated one of theplurality of sub-pixels in an (i+1)-th row are electrically connected toa same one of the plurality of reset signal lines, wherein i is apositive integer.
 10. The display panel of claim 9, further comprising asecond metal layer, wherein the second metal layer is located on a sideof the reset signal line layer facing away from the substrate; whereinan insulating layer is disposed between the reset signal line layer andthe second metal layer; and wherein the second metal layer comprises aplurality of data lines and the first metal line.
 11. The display panelof claim 9, further comprising a second metal layer and a third metallayer, wherein the second metal layer is located on a side of the resetsignal line layer facing away from the substrate; wherein the thirdmetal layer is located on a side of the second metal layer facing awayfrom the substrate; wherein an insulating layer is disposed between thesecond metal layer and the third metal layer; wherein the second metallayer comprises a plurality of data lines and a plurality of firstpositive power supply signal lines; wherein the third metal layercomprises a plurality of second positive power supply signal lines andthe first metal line; and wherein the plurality of second positive powersupply signal lines are electrically connected to the plurality of firstpositive power supply signal lines.
 12. The display panel of claim 6,wherein the data write module comprises a first transistor; wherein afirst end of the first transistor is electrically connected to a dataline; wherein a second end of the first transistor is electricallyconnected to a first end of the drive transistor; wherein the thresholdcompensation module comprises a second transistor, wherein a first endof the second transistor is electrically connected to a second end ofthe drive transistor; and wherein a second end of the second transistoris electrically connected to the control end of the drive transistor;wherein the light emission control module comprises a third transistorand a fourth transistor; wherein a first end of the third transistor iselectrically connected to a first positive power supply signal line;wherein a second end of the third transistor is electrically connectedto the first end of the drive transistor; wherein a first end of thefourth transistor is electrically connected to the second end of thedrive transistor; wherein a second end of the fourth transistor iselectrically connected to the light emitting element; wherein the firstreset module comprises a fifth transistor, wherein a first end of thefifth transistor is electrically connected to a reset signal line, andwherein a second end of the fifth transistor is electrically connectedto the control end of the drive transistor; and wherein the second resetmodule comprises a sixth transistor, wherein a first end of the sixthtransistor is electrically connected to the reset signal line, andwherein a second end of the sixth transistor is electrically connectedto the control end of the light emitting element.
 13. The display panelof claim 1, wherein the first display area comprises a first area and asecond area, wherein the second area is located between the first areaand the second display area; wherein a sub-pixel arrangement density inthe first area is greater than a sub-pixel arrangement density in thesecond area; and wherein the sub-pixel arrangement density in the secondarea is greater than a sub-pixel arrangement density in the seconddisplay area.
 14. The display panel of claim 1, wherein thediscontinuity point in each column is located either between a pair ofassociated adjacent sub-pixels in the column, or within an associatedone of the plurality of sub-pixels in the column.
 15. A display device,comprising a display panel, wherein the display panel comprises: a firstdisplay area and a second display area, wherein the first display areaat least partially surrounds the second display area, and the seconddisplay area comprises a photosensitive element, wherein each of thefirst display area and the second display area comprises a plurality ofsub-pixels each comprising a pixel circuit and a light emitting element;wherein the pixel circuit further comprises a drive transistor, a datawrite module, a threshold compensation module, a light emission controlmodule, and a first reset module; wherein the data write module isconfigured to provide a data signal to the drive transistor; and thelight emission control module is connected in series to the drivetransistor and the light emitting element separately and is configuredto control whether a drive current flows through the light emittingelement; wherein the threshold compensation mode is configured to detectand self-compensate an offset of a threshold voltage of the drivetransistor; wherein the first reset module is connected to a control endof the drive transistor and is configured to reset the control end ofthe drive transistor; in the first display area and the second displayarea, active layers of pixel circuits in each column have discontinuitypoints; and at least one of: wherein in the first display area, adiscontinuity point of one of the active layers is arranged between thethreshold compensation module and the light emission control module; orwherein in the second display area, a discontinuity point of one of theactive layers is arranged between the threshold compensation module andthe light emission control module.
 16. A display panel, comprising: afirst display area and a second display area, wherein the first displayarea at least partially surrounds the second display area, and thesecond display area comprises a photosensitive element, wherein each ofthe first display area and the second display area comprises a pluralityof sub-pixels each comprising a pixel circuit and a light emittingelement; wherein the pixel circuit further comprises a drive transistor,a data write module, a threshold compensation module, a light emissioncontrol module, a first reset module, and a second reset module; whereinthe data write module is configured to provide a data signal to thedrive transistor; and the light emission control module is connected inseries to the drive transistor and the light emitting element separatelyand is configured to control whether a drive current flows through thelight emitting element; wherein the threshold compensation mode isconfigured to detect and self-compensate an offset of a thresholdvoltage of the drive transistor; wherein the first reset module isconnected to a control end of the drive transistor and is configured toreset the control end of the drive transistor; wherein the second resetmodule is electrically connected to the light emitting element and isconfigured to reset the light emitting element; wherein in the firstdisplay area and the second display area, active layers of the pixelcircuits in each column have discontinuity points; and at least one of:wherein in the first display area, a discontinuity point of one of theactive layers is arranged between the first reset module and the secondreset module; or wherein in the second display area, a discontinuitypoint of one of the active layers is arranged between the first resetmodule and the second reset module.
 17. The display panel of claim 16,further comprising: a substrate, a positive power supply signal line,and a data line; wherein in the second display area, a first end of anactive layer of each pixel circuit is electrically connected to thepositive power supply signal line; and wherein in the second displayarea, a second end of the active layer of each pixel circuit has anorthographic projection on a surface of the substrate, the data line hasan orthographic projection of on the surface of the substrate, and theorthographic projection of the second end overlaps with the orthographicprojection of the data line.
 18. The display panel of claim 16, whereinpositions of the discontinuity points in the first display area are sameas positions of the discontinuity points in the second display area. 19.The display panel of claim 16, wherein a distance between each of thediscontinuity points and a respective drive transistor is greater than 5um.
 20. The display panel of claim 16, wherein active layers of one ofthe plurality of sub-pixels in an i-th row and one of the plurality ofsub-pixels in an (i+1)-th row of a column includes discontinuity pointsbetween the second reset module of the one of the plurality ofsub-pixels in the i-th row and the first reset module of the one of theplurality of sub-pixels the sub-pixel in the (i+1)-th row, wherein i isa positive integer.
 21. The display panel of claim 20, furthercomprising a substrate and a reset signal line layer, wherein the resetsignal line layer is located on a side of the active layer facing awayfrom the substrate; wherein the reset signal line layer comprises aplurality of reset signal lines; and wherein at the one of thediscontinuity points, the active layer of the one of the plurality ofsub-pixels in the i-th row is electrically connected to one of theplurality of reset signal lines through a second metal line, and whereinthe active layer of the one of the plurality of sub-pixels in the(i+1)-th row is electrically connected to one of the plurality of resetsignal lines through a third metal line.
 22. The display panel of claim21, wherein a first scanning line, a second scanning line and a thirdscanning line are provided for a sub-pixel in each row in the firstdisplay area and the second display area; and wherein a control end ofthe first reset module is electrically connected to the first scanningline; wherein a control end of the data write module and a control endof the threshold compensation module are electrically connected to thesecond scanning line; and wherein a control end of the second resetmodule is electrically connected to the third scanning line.
 23. Thedisplay panel of claim 22, wherein a scanning pulse signal received bythe third scanning line is same as a scanning pulse signal received bythe first scanning line or the second scanning line.
 24. The displaypanel of claim 21, wherein in the first display area, the second resetmodule of the one of the plurality of sub-pixels in the i-th row and thefirst reset module of the one of the plurality of sub-pixels in the(i+1)-th row are electrically connected to a same one of the pluralityof reset signal lines at the one of the discontinuity points.
 25. Thedisplay panel of claim 20, wherein in the second display area, a firstreset signal line and a second reset signal line are provided for asub-pixel in each row; wherein an input end of the first reset module iselectrically connected to the first reset signal line; and wherein aninput end of the second reset module is electrically connected to thesecond reset signal line.
 26. The display panel of claim 21, furthercomprising a second metal layer, wherein the second metal layer islocated on a side of the reset signal line layer facing away from thesubstrate; wherein an insulating layer is provided between the resetsignal line layer and the second metal layer; and wherein the secondmetal layer comprises a plurality of data lines, the second metal lineand the third metal line.
 27. The display panel of claim 21, furthercomprising a second metal layer and a third metal layer, wherein thesecond metal layer is located on a side of the reset signal line layerfacing away from the substrate; wherein the third metal layer is locatedon a side of the second metal layer facing away from the substrate;wherein an insulating layer is disposed between the second metal layerand the third metal layer; wherein the second metal layer comprises aplurality of data lines and a plurality of first positive power supplysignal lines; wherein the third metal layer comprises a plurality ofsecond positive power supply signal lines, the second metal line and thethird metal line; and wherein the plurality of second positive powersupply signal lines are electrically connected to the plurality of firstpositive power supply signal lines.
 28. The display panel of claim 16,wherein the data write module comprises a first transistor; wherein afirst end of the first transistor is electrically connected to a dataline; wherein a second end of the first transistor is electricallyconnected to a first end of the drive transistor; wherein the thresholdcompensation module comprises a second transistor, wherein a first endof the second transistor is electrically connected to a second end ofthe drive transistor; and wherein a second end of the second transistoris electrically connected to the control end of the drive transistor;wherein the light emission control module comprises a third transistorand a fourth transistor; wherein a first end of the third transistor iselectrically connected to a first positive power supply signal line;wherein a second end of the third transistor is electrically connectedto the first end of the drive transistor; wherein a first end of thefourth transistor is electrically connected to the second end of thedrive transistor; wherein a second end of the fourth transistor iselectrically connected to the light emitting element; wherein the firstreset module comprises a fifth transistor, wherein a first end of thefifth transistor is electrically connected to a reset signal line, andwherein a second end of the fifth transistor is electrically connectedto the control end of the drive transistor; and wherein the second resetmodule comprises a sixth transistor, wherein a first end of the sixthtransistor is electrically connected to the reset signal line, andwherein a second end of the sixth transistor is electrically connectedto the control end of the light emitting element.
 29. The display panelof claim 16, wherein the first display area comprises a first area and asecond area, wherein the second area is located between the first areaand the second display area; wherein a sub-pixel arrangement density inthe first area is greater than a sub-pixel arrangement density in thesecond area; and wherein the sub-pixel arrangement density in the secondarea is greater than a sub-pixel arrangement density in the seconddisplay area.
 30. The display panel of claim 16, wherein thediscontinuity point in each column is located either between a pair ofassociated adjacent sub-pixels in the column, or within an associatedone of the plurality of sub-pixels in the column.